Windows: Sure the default web client for Pandora is nice, but some of us want to have a desktop version to not take up a tab and memory in our browser of choice. The open source desktop client Elpis does a good job of keeping the essential functions of Pandora active while not using as many resources.

Developer Adam Haile created Elpis to work with any Windows OS running .NET 4.0 framework which means it'll run on Windows XP w/ Service Pack 3, Vista, and Windows 7.

Elpis works equally well on free or paid accounts and includes a laundry list of features: view/sort/select stations, cover and artist art, thumbs up/down and tired of this song buttons, it can minimize to your system tray, create a new station from the currently-playing song or artist, media key support, and automatically playing the station listened to upon launch.

If you're a frequent Pandora user but don't like the amount of memory the official Flash HTML5 client uses you may want to give this a try.